我一直在尝试确定系统高负载的来源，
顶部：
top - 09:55:12 up 1 day, 11:48, 4 users, load average: 7.64, 6.52, 6.33
Tasks: 279 total, 2 running, 276 sleeping, 0 stopped, 1 zombie
%Cpu(s): 50.0 us, 50.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 1785.3 total, 223.3 free, 938.8 used, 623.2 buff/cache
MiB Swap: 4096.0 total, 2259.5 free, 1836.5 used. 664.8 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1267200 root 20 0 0.1g 0.0g 0.0g R 50.0 0.3 0:00.61 top
1 root 20 0 0.2g 0.0g 0.0g S 0.0 0.3 347:46.38 /usr/lib/systemd/systemd --switched-root --system --deserialize 17
2 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.15 [kthreadd]
3 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [rcu_gp]
4 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [rcu_par_gp]
6 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kworker/0:0H-events_highpri]
9 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [mm_percpu_wq]
10 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [rcu_tasks_rude_]
11 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [rcu_tasks_trace]
12 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 6:10.89 [ksoftirqd/0]
13 root 20 0 0.0g 0.0g 0.0g I 0.0 0.0 0:41.25 [rcu_sched]
14 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [migration/0]
15 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.12 [watchdog/0]
16 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [cpuhp/0]
18 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [kdevtmpfs]
19 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [netns]
20 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:03.12 [kauditd]
21 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.11 [khungtaskd]
22 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [oom_reaper]
23 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.01 [writeback]
24 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 0:01.01 [kcompactd0]
25 root 25 5 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [ksmd]
26 root 39 19 0.0g 0.0g 0.0g S 0.0 0.0 0:07.19 [khugepaged]
27 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [crypto]
28 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kintegrityd]
29 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kblockd]
30 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [blkcg_punt_bio]
31 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [tpm_dev_wq]
32 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [md]
33 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [edac-poller]
34 root rt 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [watchdogd]
35 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:10.06 [kworker/0:1H-kblockd]
69 root 20 0 0.0g 0.0g 0.0g S 0.0 0.0 5:12.96 [kswapd0]
171 root 0 -20 0.0g 0.0g 0.0g I 0.0 0.0 0:00.00 [kthrotld]
172 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/24-pciehp]
173 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/25-pciehp]
174 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/26-pciehp]
175 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/27-pciehp]
176 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/28-pciehp]
177 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/29-pciehp]
178 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/30-pciehp]
179 root -51 0 0.0g 0.0g 0.0g S 0.0 0.0 0:00.00 [irq/31-pciehp]
虚拟机统计：
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free inact active si so bi bo in cs us sy id wa st
6 0 1676376 66624 929468 403424 109 160 1073 274 120 95 13 18 69 0 0
iostat:
Linux 4.18.0-425.13.1.el8_7.x86_64 (hostname) 04/20/2023 _x86_64_ (1 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
12.30 0.82 17.65 0.26 0.00 68.97
Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn
sda 38.05 1064.79 272.12 138382106 35365399
dm-0 10.39 250.39 25.20 32540656 3274422
dm-1 66.44 107.65 158.12 13989760 20548928
dm-2 2.39 147.00 11.90 19103775 1546792
dm-3 0.00 0.03 0.02 3989 2082
dm-4 3.45 152.32 31.33 19795688 4071283
dm-5 0.30 2.01 5.01 260581 651253
dm-6 0.00 0.03 0.02 3440 2048
dm-7 0.02 0.06 0.18 8149 23581
dm-8 0.06 0.80 0.27 104186 34788
dm-9 0.30 9.03 0.11 1173075 14455
dm-10 8.83 387.11 39.96 50309334 5192814
loop0 0.00 0.01 0.00 1917 101
loop1 0.00 0.03 0.00 3332 1
如何进一步调试导致此问题的原因？